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Huge Bank With Two Failed Hydroseeding


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Offline cwohl

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Huge Bank With Two Failed Hydroseeding
« on: Thu October 01, 2020, 06:12:05 PM »
Hi all!

Really could use some help and input as a hydroseed customer. Our new home build was left with a 45ft, 90 degree clay wall in our backyard. Over $70,000 in grading later, we now have a massive 80 ft tall bank in our backyard but more of a slope than previously. The company who graded it out for us, has hydroseeded it twice now with no results though they promised it would work great. Not sure if they are doing something wrong or if we need to go another route. Both times, they did no prep.

We have now contacted a new land management company with awesome reviews and are known for "fixing" other graders problems. They suggested erosion mats and hydroseeding on top of it. We are just worried that it won't work again.

Our other option is with a landscaper who can add topsoil, plant around 700 blue junipers, and lay large pine needle/mulch (we can do this option for around $5,000 since our family owns a wholesale landscape business).

Attached pictures, would love some input. Thanks!

Offline hydroservice

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Re: Huge Bank With Two Failed Hydroseeding
« Reply #1 on: Wed October 07, 2020, 11:31:44 AM »
erosion control matting should do the trick. There are several types. If it is flat and smooth Flexterra would work. If it is rough and not flat then a straw blanket would be better. Both have to be seeded first then matting on top. As dry as it has been around here I am not surprised nothing grew. Matting will help hold in moisture and will help with germination. Stills needs water
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Offline Bowie Man

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Re: Huge Bank With Two Failed Hydroseeding
« Reply #2 on: Fri October 09, 2020, 12:20:15 PM »
The blanket and hydroseed combo is a good solution.  I would suggest a more longer term blanket than straw.  Either a double net excelsior or a straw / coconut blanket would offer a longer term stabilization of the slope giving the vegetation a longer time to establish.   That brings up the second point.  The selection of seed types is key here as you would need a low maintenance, deep rooted type blend to insure long term vegetated stabilization of the slope.
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Offline Canadian Hydroseed

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  • Location: Northeast British Columbia, Canada
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Re: Huge Bank With Two Failed Hydroseeding
« Reply #3 on: Sat October 10, 2020, 09:33:52 AM »
That's quite a steep slope.  I think you're going to have this battle for a long time and would suggest you lower your expectations for having any form of grass growing over the long term, particularly on the steepest parts. Which way does the slope face?  If south or southwest the problem will be more acute. I am entirely unfamiliar with your climate (annual precipitation, temps) and grass types.  My recommendation is different than the others who have already posted, and think the option you were given of planting the junipers is best (minus the topsoil).  Before you decide on any option, connect with an Professional Agrologist and conduct a site visit.


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